Postural orthostatic tachycardia syndrome (POTS)

POTS

“Postural orthostatic tachycardia syndrome (POTS) is a blood circulation disorder characterized by two factors:

A specific group of symptoms that frequently occur when standing upright
A heart rate increase from horizontal to standing (or as tested on a tilt table) of at least 30 beats per minute in adults, or at least 40 beats per minute in adolescents, measured during the first 10 minutes of standing

POTS is diagnosed only when orthostatic hypotension is ruled out and when there is no acute dehydration or blood loss. Orthostatic hypotension is a form of low blood pressure: 20mm Hg drop in systolic or a 10mm Hg drop in diastolic blood pressure in the first three minutes of standing upright.” - Johns Hopkins